/Engine/Source/Runtime/Landscape/Classes/LandscapeSplinesComponent.h
Returns a suitableULandscapeSplinesComponentto place streaming meshes into, given a location falls back to "this" if it can't find another suitable, so never returns nullptr
[ULandscapeSplinesComponent](API\Runtime\Landscape\ULandscapeSplinesComponent) * GetStreamingSplinesComponentByLocation ( const FVector & LocalLocation, bool bCreate )